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说明：  Java call dahua SDK connection camera simple Demo

说明：  java 中的多线程程序实例,包括：线程的创建方式、线程的生命周期、线程的方法（启动、挂起、唤醒、优先级等）(The multi-threaded java program example)

说明：  spring demo as spring boot

1.2版本， 1.对联通手机号码进行支持，主要的处理就是在短信中心的控制上 2.对容错能力进行提高,对于发送失败的信息,加以提示. 3、解决以手机做为gsm模块时不能正常接收短信的问题，从而达到聊天的效果。(Version 1.2, 1. Unicom)

说明：  一套电商系统，包括前台商城系统及后台管理系统，基于SpringBoot+MyBatis实现，采用Docker容器化部署。前台商城系统包含首页门户、商品推荐、商品搜索、商品展示、购物车、订单流程、会员中心、客户服务、帮助中心等模块。后台管理系统包含商品管理、订单管理、会员管理、促销管理、运营管理、内容管理、统计报表、财务管理、权限管理、设置等模块(A set of e-commerce system, including foreground mall system and background management system, is implemented based on springboot + mybatis and deployed in docker container. The front desk mall system includes home page portal, product recommendation, product search, product display, shopping cart, order process, member center, customer service, help center and other modules. Background management system includes commodity management, order management, member management, promotion management, operation management, content management, statistical report, financial management, authority management, setting and other modules)

一个读写文本文件的java类,传入strbuf，传出按照回车分割的字符串。用于读写小size(<=10M)的文本文件。(read text file class)

springmvc security 权限管理例子(springmvc security )

说明：  springmvc 集成mybatis入门源码，快速上手，掌握spring框架和mybatis的集合开发,快速开发学习(Springmvc integration mybatis entry source code, quickly get started, master the spring framework and mybatis collection development, rapid development learning)

This InstructionVisitor marks all classes that are used in an instanceof test by any of the instructions that it visits.

目的是通过一个简单多用户文件系统的设计，加深理解文件系统的内部功能和内部实现。(The purpose of this experiment is to design a simple multi-user via the file system, deepen the understanding of the internal functions and internal file system implementation.)